﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

namespace System.Drawing;

/// <summary>
/// This interface defines methods for obtaining a display/window device context handle (Win32 hdc).
/// Note: Display and window dc handles are obtained and released using BeginPaint/EndPaint and
/// GetDC/ReleaseDC; this interface is intended to be used with the last method only.
///
/// Warning to implementors: Creating and releasing non-display dc handles using this interface needs
/// special care, for instance using other Win32 functions like CreateDC or CreateCompatibleDC require
/// DeleteDC instead of ReleaseDC to properly free the dc handle.
///
/// See the DeviceContext class for an implementation of this interface, it uses the Dispose method
/// for freeing non-display dc handles.
///
/// This is a low-level API that is expected to be used with TextRenderer or PInvoke calls.
/// </summary>
public interface IDeviceContext : IDisposable
{
    IntPtr GetHdc();

    void ReleaseHdc();
}
